Convert matrix in single column/row vector

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Ali Baig
Ali Baig 2017-11-5
评论： Petr Hosek 2024-9-6
Hi, I have to convert a matrix in one column/row vector composed of all the rows of the original matrix. How can I do this? Thanks. For example, to convert [1 2; 3 4] in to [1 2 3 4].

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采纳的回答

Jos (10584)
Jos (10584) 2017-11-5
Take a look at reshape and transpose
A = [1 2 ; 3 4]
reshape(A,1,[])
transpose(A)
A.'
A(:)
reshape(A.',1,[])

更多回答（4 个）

M Shujah Islam Sameem
%%%% Converting Matix to vector
A = [1 2 3; 4 5 6; 7 8 9] % Example matrix
reshape(A,[],1) % convert matrix to column vector
reshape(A,1,[]) % convert matrix to row vector
  2 个评论
Samaa Yasser
Samaa Yasser 2021-4-7
@M Shujah Islam Sameem excuse me ,, i want to convert image matrix size 256x256 to row vector with length same size can you please help me ?
Rik
Rik 2021-4-7
'the same size', do you mean a vector length 256 or 65536? In the latter case, read the answer.

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Muhammad Usman
Muhammad Usman 2019-12-23
A = [1 2; 3 4];
B = A(:) % convert the matrix into a column vector
C = A(:)' % convert the matrix into a row matrix
Fariha Tabassum
Fariha Tabassum 2020-4-6
A = [1 2; 3 4];
B = A';
C = reshape(B,1,[])
ans of C will be [1 2 3 4]
Çağatay Murat Yılmaz
You can convert the following matrix to a vector using the following code.
input matrix:
0 1 0 2 3
4 5 6 7 8
9 10 11 12 13
output vector:
0 1 0 2 3 4 5 6 7 8 9 10 11 12 13
code:
vector=[];
for i=1:size(matrix,1)
vector=[vector matrix(i,:)];
end
  2 个评论
Rik
Rik 2020-10-4
Dynamically growing an array is very inefficient. You should consider transposing the array and using reshape.
Petr Hosek
Petr Hosek 2024-9-6
Technically possible, but generally the least effective solution in Matlab. I would consider this bad practice.

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